This is the ValueSet that contains codes in both AU eRequesting CommunicationRequest Patient Medium (http://hl7.org.au/fhir/ereq/ValueSet/au-erequesting-communicationrequest-patientmedium) and AU eRequesting CommunicationRequest Patient Medium (http://hl7.org.au/fhir/ereq/ValueSet/au-erequesting-communicationrequest-patientmedium).